Hiya, Having received my replacement Radeon 4850 I eagerly installed it only to be met with various problems which appear to stem from the fact that I`m attempting to run it alongside an nVidia card. Problems ranged from the PC locking up to general graphics slowdowns and instability. When attempting to set up the monitor attached to the nVidia card I was greeted with this error: "The currently selected graphics display driver can not be used. It was written for a previous version of Windows, and is no longer compatible with this version of Windows. The system has been started using the default VGA driver. Please contact your hardware manufacturer to get an upgraded driver, or select one of the Microsoft provided drivers." Now, bearing in mind that I had this combination of hardware running for at least 2 months before the original Radeon died I`m somewhat confused. I`ve tried removing and reinstalling drivers in just about every order and using older drivers as well but it refuses to play ball. Any ideas out there please ? Cheers Paul